|
DE2509944A1
|
|
Transparent radiation shields - from ethylene-vinyl acetate copolymers contg. large amts. of lead oxide
|
|
DE2454462A1
|
|
Optical indicator with liq crystal - having dual purpose composite backing film which is both transmitting and interference film
|
|
GB1463731A
|
|
Method of forming an optical member such as a lens
|
|
GB1428700A
|
|
Liquid crystal display devic3
|
|
DE2346078A1
|
|
Spacer-rings for moulds of synthetic optical lenses - contg. polyisobutylene, sulpho-chlorinated polyethylene, ethylene-vinyl acetate copolymer and chalk
|
|
GB1373206A
|
|
Optical indicator element with liquid crystal layer
|
|
FR2132806A1
|
|
Strengthening of glass - by vacuum heat treatment
|
|
DE2017723A1
|
|
Bullet-proof safety glass bonded by epoxyresin
|
|
DE1629350A1
|
|
Covered, scratch-resistant, chemically and mechanically resistant plastic disc
|
|
GB1133348A
|
|
Process for producing protective eye-glasses, screens or spectacle lenses, and protective eyewear produced by the process
|
|
GB727381A
|
|
Improvements in or relating to optical glass
|
